I'd certainly choose the Mobil filter over Purolator, Fram Ultra or RP for it's base end patented by-pass valve (although it looks very similar too the WIX by-pass arrangement to me).
What point is a high efficiency, low micron count media if unfiltered oil washes over a dirty element and through the by-pass valve at the bottom of the filter can?
Remember the by-pass valve is open a lot, not just with cold thick oil or a clogged filter but during regular pressure surges such as when an engine is first started.
What point is a high efficiency, low micron count media if unfiltered oil washes over a dirty element and through the by-pass valve at the bottom of the filter can?
Remember the by-pass valve is open a lot, not just with cold thick oil or a clogged filter but during regular pressure surges such as when an engine is first started.